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Dental Patient Chair

A patient and seat technology, applied in the field of equipment that allows patient seats to move, can solve the problem of complicated and time-consuming replacement or changing parts

Active Publication Date: 2020-05-05
CEFLA SOC COOP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, when modifying the law of relative motion between the backrest and the seat, exchanging or changing the components of the mechanism is complex and time-consuming, since it requires access to and disassembly of the kinematic chain of the joint between the backrest and the seat a large number of parts

Method used

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  • Dental Patient Chair
  • Dental Patient Chair
  • Dental Patient Chair

Examples

Experimental program
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Effect test

Embodiment Construction

[0052] figure 1 A typical dental patient chair 1 is shown comprising a backrest 2 , a fixed part 3 of the seat hinged to a footrest 13 , a base 4 and a pantograph arm 5 . Seat 1 is shown with an upright backrest approximately perpendicular to the floor.

[0053] For simplicity, a two-piece chair seat is shown with two articulations, one at the level of the patient's hips and one at the level of the patient's knees: thus, moving the footrest 13 can Hinged with the fixed part 3 of the seat. In any case, the operation remains the same even for a seat with only part seat 3 .

[0054] The zoom arm 5 allows indicative raising and lowering of the seat 3 relative to the floor from a height of 460 to 840 mm. The top end of the zoom arm forms a kind of tower 14 that supports the reclining mechanism of the backrest and the coordinated movement of the seat. The structure of the tower 14, base 4 and pantograph arm 5 is known and therefore not an object of the present invention.

[00...

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PUM

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Abstract

Patient chair (1) preferably for dentistry, comprising a lifting group comprising a base (4) on which a pantograph arm (5) is hinged, which is hinged on and shifts a turret (14), a moving group for relatively moving said seat (3), comprising an under seat (15) which is in its turn hinged to said turret (14) through two piston rods (6 and 7), wherein the reclining of the backrest (2) occurs according to an arc of a circle, said chair (1) having moreover a longitudinal compensation mechanism. According to the invention, said reclining and compensation movements are obtained thanks to the combination of an arc prismatic guide system for backrest reclining, dynamically combined with a four-bar linkage for moving the under seat (15) and seat (3), said four-bar linkage comprising said two piston rods (6 and 7), said turret (14) and an under seat (15) which links said seat (3) to said turret (14) and said movements are obtained through an actuator only.

Description

technical field [0001] The invention relates to the technical field of patient chairs used in dentistry. More specifically, the present invention relates to an apparatus and method for allowing movement of a patient chair. Background technique [0002] In the history of dentistry, at least until the 1960s, dentists used to work standing up, whereas today dentists mostly work sitting. Dental chair manufacturers strive to provide dental treatment units that allow the dentist to work more efficiently, ie comfortably, without damaging the dentist's musculoskeletal system. [0003] At the same time, the patient seat must be comfortable for the patient: a comfortable patient is more relaxed and the dentist's job is easier. [0004] An appreciated feature of the dental patient chair is the ability to hold the patient in the Trendelenburg position. The Trendelenburg or shock position is the position in which the patient is placed in shock situations or during the performance of c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61G15/02A61G15/10
CPCA61G15/02A61G15/10A61G2200/327
Inventor M·特龙贝蒂
Owner CEFLA SOC COOP